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Stockholders' Equity - Summary of Stock Options (Details) - $ / shares | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Equity [Abstract] |  |
Number of Options, Beginning Balance | 1,466,520 | 112,193
Number of Options, Granted | 275,000 | 1,362,500
Number of Options, Expired | (9,775) | (8,173)
Number of Options, Ending Balance | 1,731,745 | 1,466,520
Number of Options Vested and Expected to Vest | 1,731,745 | 1,466,520
Number of Options Vested and Exercisable | 1,594,245 | 783,013
Weighted Average Exercise Price, Beginning Balance | $ 6.66 | $ 62.00
Weighted Average Exercise Price, Granted | 2.04 | 2.32
Weighted Average Exercise Price, Expired | 82.05 | 42.84
Weighted Average Exercise Price, Ending Balance | 5.50 | 6.66
Weighted Average Exercise Price, Options vested and expected to vest | 5.50 | 6.66
Weighted Average Exercise Price, Options vested and exercisable | $ 5.80 | $ 10.32
Weighted Average Remaining Contractual Life (in years), Beginning Balance | 9 years 5 months 27 days | 6 years 2 months 23 days
Weighted Average Remaining Contractual Life (in years), Granted | 4 years 9 months 22 days | 9 years 9 months 11 days
Weighted Average Remaining Contractual Life (in years), Expired | 0 years | 0 years
Weighted Average Remaining Contractual Life (in years), Ending Balance | 7 years 11 months 1 day | 9 years 5 months 27 days
Weighted Average Remaining Contractual Life (in years), Options vested and expected to vest | 7 years 11 months 1 day | 9 years 5 months 27 days
Weighted Average Remaining Contractual Life (in years), Options vested and exercisable | 8 years 2 months 16 days | 9 years 2 months 30 days

X
- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Share-based compensation arrangement by share-based payment award options outstanding weighted-average remaining contractual term, expired. + References No definition available. + Details
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- Definition Share-based compensation arrangement by share-based payment award options outstanding weighted-average remaining contractual term, granted. + References No definition available. + Details
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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(4) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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